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Optical and thermo electrical properties of ZnO nano particle filled polystyrene

机译：ZnO纳米颗粒填充聚苯乙烯的光学和热电性质

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摘要

The study of optical and thermally stimulated electrical properties such as optical band gap, refractive index, X-ray spectra, SEM spectra, thermally stimulated discharge current (TSDC), differential scanning calorimetry (DSC) have been undertaken in ZnO nanoparicle filled polystyrene nanocomposite thin film of 30 lm thickness. The appearance of single TSDC peak at temperature 408 ± 5 K in nanocomposite samples shows the charge carriers injected from deeper trapping levels. It is due to the modification of surface and bulk properties of polystyrene by filling of ZnO nanoparticles. In other hand, the strong interaction of nanoparticles with polymer matrix is the expected reason of improvement of crystallite size, optical energy band gap, refractive index, TSDC, glass transition temperature, and charge storage. It is confirmed from SEM images that the modifications of these properties are caused by creation of clusters in amorphous-crystalline boundaries of pristine polystyrene.
机译：在填充有氧化锌纳米颗粒的聚苯乙烯纳米复合材料中，对光学和热激发电学性质进行了研究，例如光学带隙，折射率，X射线光谱，SEM光谱，热激发放电电流（TSDC），差示扫描量热法（DSC）。 30 lm厚的薄膜。在纳米复合材料样品中，温度为408±5 K时出现单个TSDC峰，表明从较深的陷阱能级注入了电荷载流子。这是由于通过填充ZnO纳米颗粒而改变了聚苯乙烯的表面和整体性能。另一方面，纳米颗粒与聚合物基质的强相互作用是改善微晶尺寸，光能带隙，折射率，TSDC，玻璃化转变温度和电荷存储的预期原因。从SEM图像证实，这些性质的改变是由于在原始聚苯乙烯的无定形晶界中产生簇而引起的。

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